The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2009
Filed:
Feb. 17, 2006
Applicants:
Joseph P. Nuzzi, Dover, OH (US);
Wendell E. Mast, Dundee, OH (US);
Inventors:
Joseph P. Nuzzi, Dover, OH (US);
Wendell E. Mast, Dundee, OH (US);
Assignee:
Allied Machine & Engineering Corp., Dover, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23B 51/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spade drill insert and drilling tool assembly is provided wherein the lands of the spade drill insert have helical margins which provide increased stability during cutting operations and the holder has a clearance surface providing better chip evacuation. The margin may have a helical trailing side or leading side, a parallel helical margin, or may also include a gullet or flute adjacent the helical margin.